A mysterious street artist, known only as "The Decapitator," has struck again. This time, he or she has removed the head of "Sex In The City" star Sarah Jessica Parker. That is, on a billboard.

For several months advertisements have been popping up around London in which the heads of models and actors have been removed and replaced with images of bloody stumps. Essentially, he or she covers the part of a photo of a person's head with a photo-shopped gory, headless image.

Environmentalgraffiti.com reported that it is thought that the artist strikes in response to being bombarded with advertisements. The media has dubbed his or her art, culture jamming or sub-vertising, because it makes a statement by parodying or mocking corporate or political advertising.

Similar attitudes toward advertising overkill exist in France and Brazil. In France anti-advertising groups, called the dismantlers, publicly meet at the site of large advertisements and tear them down in the hopes of creating a dialogue about the amount of advertising people are subjected to. In Sao Paolo, Brazil, the mayor outlawed outdoor advertising all together, taking down all billboards in a campaign for a "new clean city."